1 (3) | National Bureau of Economic Research | USA | ||
2 (29) | World Bank, United States | USA | ||
3 (71) | International Monetary Fund | USA | ||
4 (177) | International Food Policy Research Institute United States | USA | ||
5 (1054) | The Nature Conservancy, USA | USA | ||
6 (1115) | Santa Fe Institute | USA | ||
7 (1147) | RAND Corp | USA | ||